chore(deps): update consensys/teku docker tag to v26.3.0 (#276)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

compose-cl.yml

@@ -84,7 +84,7 @@ services:
 
   cl-teku:
     profiles: [cl-teku]
-    image: consensys/teku:${VC_VERSION:-26.2.0}
+    image: consensys/teku:${VC_VERSION:-26.3.0}
     restart: unless-stopped
     labels:
       - "alloy-monitored=${CL_TEKU_ALLOY_MONITORED:-true}"

compose-vc.yml

@@ -85,7 +85,7 @@ services:
 
   vc-teku:
     profiles: [vc-teku]
-    image: consensys/teku:${VC_TEKU_VERSION:-26.2.0}
+    image: consensys/teku:${VC_TEKU_VERSION:-26.3.0}
     command: |
       validator-client
       --beacon-node-api-endpoint "http://charon:3600"